Display-based Access Expansion Module (DBA)
The Display-based Access Expansion Module provides additional line (DN) or feature keys for the M3904 or M3905 telephone. The DBA has eight keys on three layers for a total of 24 additional DN or feature keys.
The three layers are accessed through the use of a Page key. The M3904 or M3905 supports one DBA module.
Colour - CHARCOAL
Condition - REFURBISHED